com·port (km-pôrt, -prt)
v. com·port·ed, com·port·ing, com·ports
v.tr.
To conduct or behave (oneself) in a particular manner: Comport yourself with dignity.
v.intr.
To agree, correspond, or harmonize: a foreign policy that comports with the principles of democracy.

[Middle English comporten, from Old French comporter, to conduct, from Latin comportre, to bring together : com-, com- + portre, to carry; see per-2 in Indo-European roots.]

I came accross another new word recently. Take a look at this report of Serena William's recent outburst:

According to the Grand Slam Rule Book, unsportsmanlike conduct when referred to the Grand Slam committee can be treated as "aggravated behaviour", which "is flagrant and particularly injurious to the success of a Grand Slam, or is singularly egregious".

The term roué is thought to stem from Philip, duke of Orléans and regent of France (1715-1723), who humorously designated his debauched companions as roués, either to suggest that they deserved to be broken upon the wheel or because their behaviour was so exhausting that they felt they had undergone this torture.